Tourists visit a historical remains in Ayutthaya province of Thailand, Nov. 6, 2008. Thai tourism is expected to lose 1.5-2.1 billion U.S. dollars if the country's polictical crisis lasts till the end of the year, according to a Thailand-based research center. Tourism earned for Thailand 23.5 billion dollars in 2007.[Xinhua Photo/Liu Lianfen]